Home / 530,278.16-731,799.25-288,576.32

Finding the Fourth Proportional to 530,278.16, 731,799.25 and 288,576.32

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Solution

The fourth proportional to 530,278.16, 731,799.25 and 288,576.32 is: 398,243.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,278.16 : 731,799.25 = 288,576.32 : x
  2. Step 2: Convert to fraction form
    530,278.16/731,799.25 = 288,576.32/x
  3. Step 3: Cross multiply
    530,278.16x = 731,799.25 × 288,576.32
  4. Step 4: Simplify right side
    530,278.16x = 211,179,930,163.32
  5. Step 5: Solve for x
    x = 211,179,930,163.32/530,278.16
  6. Step 6: Final answer
    x = 398,243.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.